Gauge



et. i6 1923. `1,471,231

v L. ROUANET GAUGE Filed Feb. 16 1920 ATTY- o To all fr/wm z'mag/ concern: i

Y ie

Passati' ea.' .16,ieizaP-f- 'LOUIS fiamme :Be it known that LELOUIS- ize-n of the Republic.ofjFra-nce, residingffat /12Rue Franklin, Ivryllfort7 Seine,`infthel- Republic of- France, have invented new and Vuseful Improvements in Gauges, of whichk thefollowing is a specification.

fThis invention relates lto acal`per gaugelof the C type which, among other uses, mayA be employed for verifying the diameter' of inner ringsY of ball or roller bearings or like members.

r-iccordingV to one contact member. kBy means-of said arrange.-

' ment, the opening ofthe gauge 'may be varied easilyand accurately in order to test members having different diameters.v

The first mentioned contacting member 1s also preferably mounted so that rit -may y.be shifted in a direction at right angles to its n i vto the righnthe gauge may be used for inspecting pieces havingasmaller diameter.

own anis for the ypurpose of varying also .ln the annexed drawings, given wayY of example F ig. 1 is a side elevation view,partlyl in" section, of a snap gauge constructed 1n ac#l cordance with the lnventlon.

Fig. 2 is an end viewof the'same,

The gauge body l is providedat one en with a cylindrical head 2 in which is secured a sleeve 3. A cylindrical rod 4 slides within said sleeve and carries at oneend a spherical Vcontact member 5 which is conveniently embedded or spun in a cup shaped Vprojection on the rod 4. VThe rod 4i is preventedfrom rotating in the sleeve 3 by a screw 7 inserted through vthey latter and engaging at its end in a slot 8 in the rod 4. For the purpose of 'i obtainingY an accurate adjustment of the.

contactpointa of the spherical contact mem;

' ber 5J the centrefof'the latter is located on the axial line A-Yi-Aof theV rod 4f.; .Y

The body l'gof the gauge is provided at its r opposite end with guidewalls 9, y10-between i which a sliding-block 12 `may `be shifted,

said sliding block being inlcontact with Va suitably planedV surface, 11` on the gauge..

ROUANET, cit'- feature of the invention, one of the contacting members of the gauge' is formed by a cylindrical body and actsby* i one of its genelatrices whilst the othercon#y Y tact member, which maybe'spherical or cy- Y lindrical, may be shifted in a direction at an; angle with the acting generatriX of the first4 threaded vpart 24l'andia conicalend 25. Said ing ay conical and thedivision lines 27 coincidewith the l It, v

bday. f'rhe naa 12 is noaaiingiliidinauy f f fat13 and carriesacylindrical Contact mem- Y en ivayironnjr'asnen, is'slierten` rogeeivrrnenn nnrrnr'oiifrrois j o :i@clamav-@aferrea-ISAEMNGE- "f ber 14 whichiis clamped 'in position by means f of a"screwffl.v Y Y i v y*The slide 12 may beshiftedat right angles to the axis ofthe cylindrical'oentact member '14,.; It is providedgfor that purpose with an elongated slot@ y16 through?whichsextends a' screw k1"(y which may :be tightlylscrewed' finto y l theV gauge bodylfor securing-the slide v12 in..

position., In order to' prevent any( accidental displacement kof the latter whenfthe screw i 17 is tightened up, a small plate 1 9 engaging andflO'is-.inserted between 'theY head of the screw l17 y'and the slide. t

Y; The centre of the sphericalfcontact 1'member 5 may be shifted along thefaXis L-,

`wlnichis at an angle with respectto the-actr ing `generatrixV of the cylindrical con-f .tact member 14E and located in a plane passing through,v the :axis ofthe latter. By this .p means, if the Contact member 5 is shifted to the left *(Fig, l) al member having .al di`l ameter greater than a-b may;bep'inspected`v intoirecesses 20 kand'2'1 in thef'said walls 9 70 whilst iflthe'said contact member 5 isV shifted Thesleeye 3 is provided with a screwfV parts 241, 25 are slotted longitudinally whereconical part 25.

l:bytheV rod 4f may be clampedwithinthe s'ta-V n I tionarysleeve 3 bylmeans of a nut 26 hat.Y j

boreA rvcorresponding to the v Y, l

't i Y 90 18land equidistant longitudinal divisions 27 o by means of :which the distance, suchV as a-b,ebetweenthe twoxcontact members of thelkogauge Lmay be vaccurately .'ascertained.

lf, v'for instance, .theLangle n between A-A and Bi-B is such that sin z, adisplace.-

vmeint of 1 millimeterL ofthe contact member 5 along A421 will: correspondtoa variation of lniillimeter ofc-b and if the helical line l8vihasaopitch of one millimeterand if willbe possible to Vmeasure the distance a-b in 1/100 of a millimeter lby.'ascertraining q l which point ofintersection of the helix 18.v

tenjequidistant divisions 27 lare provided, Yit Y Haying now desepibed myinvention', what' I claim-as new and 'desire v ftersPatentis: v *Y n Y. s

11, A gauge comprisingvnieombination a fbody,"`a :block slidabl'e fon saidr Vbody,r meansv 'f for- Clamping saidfblock'on the body, a cy?` `1indiica1`contact memberVV carried oy-said fbioek and ,ada'ped to engage therwork by one Yofi itsgeneratrix `linesvand areonip'lementai'y Contact member monnted on said Lbody and adapted'.v towbe shifted in a dii'ectionf at' 'an` v 'toseeure by Let angle with said 'generan-ix.' 1

gange'eoniprislng .in Combination a AIJbOdy, a block slidable on said body, means foiielamping said -bloek'on :the body, acy- 'lind'rical Contact member carried by said 'i block and adapted to engage the Work by' one of its generati'ix lines` an axially movable ,Tod mounted` in' the' body andhaving'its axis in a directionat anv angle v'iththe said generatiix a Complementary VContact member'on/saidfrod. f v

Y 8v. A gauge eomprisinga body, yabloek i slidabieyon lsaid body, ineans fory 'c1ainpingV said block on the body, aeylindrieal ContactY inembei/earried by saidblook and adapted dto engage rthe Work by one of its generatrix linesy an axiallymovable rod mounted in vthea,gauge body and-having its axis in a dig dieate ih-e dfiscancebetween the contaotmem- I bersof the gauge.

in testimony whereof I have ksigned niy 'naine to' @his specification.

LoUis ROUANET, 

